.mes_box {
  line-height: 2rem;
  background-color: rgb(82, 151, 248);
  border-radius: 5px;
  color: #000;
  font-size: 1.5rem;
  padding: 0.5rem;
  text-align: center;
  margin: 0 auto;
  width: 300px;
  animation: .5s fadein;
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.mes_box:hover {
  opacity: 1;
}
@keyframes fadein {
  from {
    opacity: 0.7;
  }
  to {
    opacity: 1;
  }
}
